On Thu, Dec 22, 2016 at 01:10:19PM -0800, Linus Torvalds wrote: > Ok, so the numa issue was a red herring. With that fixed: > > On Thu, Dec 22, 2016 at 1:06 PM, Dave Chinner <da...@fromorbit.com> wrote: > > > > Better, but still bad. average files/s is not up to 200k files/s, > > so still a good 10-15% off where it should be. xfs_repair is back > > down to 10-15% off where it should be, too. bulkstat still fires off > > a bad page reference count warning, iscsi still panics immediately. > > Do you have CONFIG_BLK_WBT enabled, perhaps?
Ok, yes, that's enabled. Let me go turn it off and see what happens. > It's new to this merge window, and I'm not convinced it's been tuned. > Particularly for your kinds of fairly extreme IO loads. Well, these aren't extreme IO workloads. Yes, the filesystem does a lot of work on the CPU, but the IO loads XFS generates aren't particularly high - maybe 2-3000 IOPS at most, and mostly the bandwidth is below 100MB/s. Cheers, Dave. -- Dave Chinner da...@fromorbit.com
